One of the things I've heard a lot about recently has been Bitcoin - a math-based currency that has been attracting more and more popularity in recent months.
On a recent vacation, I spent a lot of time reading and trying to (1) understand why people are saying Bitcoin is revolutionary and (2) how to articulate that understanding in my own words.
I wrote a quick piece over at Medium that helped me put my understanding of Bitcoin into perspective. Hopefully it's helpful to you too.